Steam-heating system.



E. E. GOLD.

STEAM HEATING- SYSTEM.

APPLICATION FILED AUG. 8, 1910.

Patented Jan. 9, 1912.

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WITNESSES:

E. E GOLD. STEAM HEATING SYSTEM.

APPLICATION FILED AUG. 8, 1910.

Patented Jan. 9, 1912 W i s T m m J? m 0 E W W. c Yfi Y 6 fl \2 i 4 0 k A V 0 W 1 a F w I w 4 v nwmx L A 1 h E m l W EDWARD E. GOLD, or new YORK, n. Y.

STEAM-HEATING SYSTEM.

Specification of Letters Patent.

Application filed August 8, 1910. Serial No.- 576,054.

To all whom it may concern:

Be it known that I, EDWARD E. Grow, a citizen of theUnited States, residing in the borough of Manhattan, city, county, and

State of New York, have invented certain new and useful Improvements in Steam- Heat-ing Systems, of which the following is a specification.

This invention aims to provide certain improvements in steam heating systems of the type especially adapted for use in the heating of railway cars.

A feature of importance is the control of the system by a single handle or other controlling means, to determine the mode or principle under which the system shall operate.

Other features are referred to in detail hereinafter.

The accompanying drawings illustrate an embodiment of the invention.

Figure 1 is a perspective View of the principal parts of the heating system applied to one side of a railway car. Fig. 2 1s a vertical sectional view through the discharge pipe and the non-automatic admission valve. Fig. 3 is a horizontal section on the line 3-3 of Fig. 2. Fig. 4 is a horizontal section through the automatic admission valve. Fig. 5 is a sectional View of the valve casing of Fig. 2 taken on a vertical plane at right angles tothat of Fig. 9. Fig. 6is a horizontal section on the line 6'-6 of Fig. 2.

Referring to the embodiment of the inven-' tion illustrated, the source of supply is a train-pipe A running under the car and provided with branches B to radiators at opposite sides of the car. From the branch B the steam passes through an automatic admission valve 0 and thence by way of a riser D through the floor E of the car to a nonautomatic admission valve within the car, and'thence by a pipe F to the admission pipe G of the radiator, the return pipe H of the radiator being provided with an expansion loop J through which the steam passes to the discharge pipe and thence down through the floor of the car.

In previous applications, for example, in my application No. 562,397, filed May 20, 1910, steam heating systems are described which can be operated at will either as presof steam; being opened inter-mitt jtly by a trap to permit the escape of water of condensation, or being provided with a small drlp passage sufficient to permit the escape .of water of condensation as fast as the latter forms, but not to-permit the escape of any substantial quantity of steam. In the system illustrated, there are two discharge passages, one by way of an outer pipe K- through which the steam passes into the easing L of a thermostat, and thence by way of the trumpet M to the atmosphere, heating and expanding the thermostatic vessel N .which forces out-ward the stem 0 (Fig. 4) of the automatic valve C so as to close the latter and prevent the further admission of steam. When, by reason of the lack of steam, the thermostat cools, the automatic admission valve C reopens and replenishes the supplyof steam, the passage being al-- Within the outer discharge pipe K is an inner discharge'pipe P which communicates through a small opening at its upper end with the discharge pipe Q from the radiator loop J, so as to hold back the pressure while permitting the escape of water of condensation. According as the discharge isopen to the'outer discharge pipe K or cut off therefrom, the system will therefore operate as a vapor system or as a pressure system.

A discharge valve is provided for determining whethcr or not the discharge shall take place through the outer pipe K, the drip opening into the pipe P being of importance only when the regular discharge valve is closed, because of its negligible area as compared with the valve opening. The discharge valve R closes upon a seat 8 in the lower part of the casing T. The valve is provided with a central opening and a dependingtube U fitting within a ring V supported by arms within the casing T so as to leave a clear space outside of the ring for the passage of steam to the outer discharge pipe K. The inner discharge pipe P is fastened in the ring V. There is thus a telescoping joint between the pipes P and U. The valve R is pressed downward by a spiral spring W and is raised by means of a stem X having on its lower end a head with a flange Y -engaging the under edge of a ring Z which is screwed into an upwardly-project- Patented Jan. 9, 1912.

ing annular flange a integral with the top ofthe valve. The flange a is provided with perforations b and the head on the lower end of the stem X is provided with a radial notch or groove 0 in its under face so as to admit water to the opening (Z through the center of the valve whenthe stem isv pressed down upon the top of the valve. A slight movement is permitted to the stem, relatively to the valve, so that it can be moved both vertically and rotatively.; By such movements it serves to keep the small opening clear of dirt, and this effect is increased by providing on the under side of the head a tapered projection e fitting into a corresponding recess at the upper end of the opening (I.

vides communication between the source of supply and the pipe F which leads to the admisslonbranch of the radiator; The admission valve 1 and discharge valve R are mounted on the same spindle X, and the latter is provided ith a packing .ring 3' permitting it to move up and down in the diaphragm without substantial leakage;

The admission ports of the valve casing, 70 and I, Fig. 5, are in substantially the same transverse plane, the former discharging into the chamber ata point above the valve seat 9, and the latter communicating with the chamber at a point below suchseat. The valve stem is provided with a screw thread on of high pitch screwing through a suitable part of the bonnet n, and is provided at its upper end with a handle. 0 car-- rying a pointer 72 adapted to bear against an approximately vertical face of a ring 9 upon the head of the valve casing The pointer 27 is also a spring which by its bearing against suitable depressions in the face of the ring 9 serves as an impositive lock to hold. the valve in the position to which it is set, and tends also to throw it to the extreme position when the system is to be entirely cut off or is to be worked under pressure. The ring g may'be,;forexample, of the shape shown in Fig. 3 and with the words Closed, Vapor and Pressure thereon so as'to indicate by the position of the-pointer p the condition of adjustment of the system.

The operation of the system as a whole is as follows: With the pointer in the position of pressure the two valves are as in Fig.

2. Steam is admitted through the upper chamber but is prevented from escape throughfthe lower chamber, only the drip orifice being open sotthat water may esca e.

pressure. .If the pointer p be turned apits seat, leaving a suflicient clearance for a full flow of steam, and the discharge valve R will be lifted from its seat so that the system will operate under vapor as previously described By giving the valve stem a further turn forward about one-third of a' revolution, the valve f is brought up against its seat 9 and the steam is cut off entirely. The discharge valve is opened wide so as to insure the emptying of any water-in the pipes as far as possible. i

. Various other maybe used for etermining the principles under which the system is to operate; and instead of the true vapor and pressure systuted various known or suitable modifica tions thereof or departures therefrom What I claim is 1 1. A steam-heating system having means including a discharge valve and an, admission valve controlled by the temperature of the discharge, said means being adapted in one position of said discharge valve to cause the admission of steam in unr' stricted quantity and the maintenance of gressure in the system, and in another position to cause the admission of steam in restricted quantity tially atmospheric pressure, a non-automat1c admlssion valve, and a single means said non-automatic admission valve.

2. 'A steam-heating system having an automatic admission valve, a cut-off admission valve and a discharge valve, thermostatic means exposed to the discharge and controlling said automatic admission valve said valve and thermostatic means being adapted to cause the system to operate as a pressure system with a free admission when said discharge valve is closed and steam is admitted,

por system with a restricted admission when the discharge valve is open and steam is admitted, and connecting meansbetween said discharge valve and said cut-ofi' admission valve by which said discharge valve may be set in the open orthe closed position when said cut-oif admission valve is open.

3. A steam heating system having a cutoff admission valve and a discharge valve, means for permitting a restricted discharge sure when said discharge valve is closed, thermostatically controlled means for controlling the supply of steam by the tempera-. ture of the discharge to cause the system to The system accord ngly operates un er (icnown or suitable means for operating both said discharge valve and.

and to cause the system to operate as a vavadmission valve 1 will be moved halfway to g tems herein described there may be substii and the opening of the system to substanv U to cause the system to operate under presoperate under vapor when said discharge valve is open, and connecting means between restricted admission and a free discharge, a non-automatlc admission valve and a ro-- tatable stem for operating both said discharge valve and said non-automatic admissionvalve, and having three different angular positions corresponding respectively to cut-oil, pressure and vapor. V 5. A steam heating system having means including a discharge valve and an admission valve controlled by the temperature of the'discharge, said means being adapted in one position of said discharge valve to cause the system to operate as a pressure system with a free admission and a restricted discharge, and in another position to cause the system to operate as a vapor system with a restricted admission and a free discharge, a non-automatic admission valve and a rotatable stem for operating both said discharge valve and said non automatic admission valve and having three difi'erent angular positions corresponding respectively to cut-off, pressure and vapor, and means for holding said stem impositively ineach of said three positions.

6. A steam heating system having avalve casing, a radiator having inlet and outlet pipes communicating respectively at differ. ent points with said casing, said casing-having an admission port from the source of supply and a discharge port, the interior of the casing being divided into two chambers, one communicating with the admission port and the inlet pipe and the other with the outlet pipe and the discharge port, a valve in the first chamber for closing or opening the admission port, a valve in the second chamber for closing the discharge phit,

thermostatically controlled means for corn trolling the supply by the temperature of the discharge when both said valves. are open, and connecting means for opera the two valves simultaneously to close either one or to open both of said valves.

7. A steam heating system having a valve casing, a radiator having outlet and inlet pipes communicating respectively at difierent points with said casing, said casing havmg an admission port from the source of supply and a discharge port, the interior of the casing being divided into two chambers, one communicating with the admission port and the inlet pipe and the other with the outlet pipe and the discharge port, a valve in the first chamber for closing or opening the admissionport, a valve in the second chamber for closing the discharge port, thermostatically -controlled means for controlling the supply by the' temperature of the discharge when both said valves are open,

and a common stem on which both of said valves are mounted and by which they may be operated simultaneously to close either one or to open both said valves.

In witness whereof, I have hereunto signed my name in the presencefof two subscribing witnesses,

EDVVARD' E. GOLD.

Witnesses:

HENRY M. TURK, FRED WHITE. 

